MY118653A - Addition method of supercritical carbon dioxide, and production process of expanded thermoplastic resin product by making use of the addition method. - Google Patents

Addition method of supercritical carbon dioxide, and production process of expanded thermoplastic resin product by making use of the addition method.

Info

Publication number
MY118653A
MY118653A MYPI99002916A MYPI9902916A MY118653A MY 118653 A MY118653 A MY 118653A MY PI99002916 A MYPI99002916 A MY PI99002916A MY PI9902916 A MYPI9902916 A MY PI9902916A MY 118653 A MY118653 A MY 118653A
Authority
MY
Malaysia
Prior art keywords
carbon dioxide
addition method
thermoplastic resin
pressure
supercritical carbon
Prior art date
Application number
MYPI99002916A
Inventor
Shigeo Nishikawa
Eiichi Sugihara
Masahiro Takedachi
Kaoru Yorita
Haruo Inoue
Yoko Shimada
Michio Eriguchi
Original Assignee
Mitsui Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Publication of MY118653A publication Critical patent/MY118653A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/57—Exerting after-pressure on the moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3469—Cell or pore nucleation
    • B29C44/348—Cell or pore nucleation by regulating the temperature and/or the pressure, e.g. suppression of foaming until the pressure is rapidly decreased
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • B29C44/3446—Feeding the blowing agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

THIS INVENTION PROVIDES A METHOD FOR STABLY ADDING A PREDETERMINED AMOUNT OF SUPERCRITICAL CARBON DIOXIDE AT A FIXED DELIVERY RATE INTO A FORMING MACHINE AND ALSO A PROCESS FOR PRODUCING AN EXPANDED THERMOPLASTIC RESIN PRODUCT BY MAKING USE OF THE ADDITION METHOD. CARBON DIOXIDE IS CHARGED FROM A LIQUEFIED CARBON DIOXIDE CYLINDER (1) INTO A PREDETERMINED AMOUNT DELIVERABLE PUMP (2) WHILE ALLOWING THE CARBON DIOXIDE TO REMAIN IN A LIQUEFIED STATE. WHEN THE CARBON DIOXIDE IS PRESSURIZED AND DELIVERED BY THE PREDETERMINED AMOUNT DELIVERABLE PUMP (2), A DELIVERY PRESSURE OF THE CARBON DIOXIDE IS CONTROLLED AT AN OPTIONAL PRESSURE WITHIN A RANGE OF FROM A CRITICAL PRESSURE (7.4 MPA) OF CARBON DIOXIDE TO 40 MPA TO DELIVER THE CARBON DIOXIDE WITHOUT ANY FLUCTUATION OF THE AMOUNT OF THE DELIVERY BY SETTING UP THE PRESSURE OF A PRESSURE CONTROL VALVE (3). THE CARBON DIOXIDE IS HEATED TO A CRITICAL TEMPERATURE (31° C.) OF CARBON DIOXIDE OR HIGHER TO CONVERT IT INTO SUPERCRITICAL CARBON DIOXIDE. THIS SUPERCRITICAL CARBON DIOXIDE IS THEN ADDED TO A MOLTEN THERMOPLASTIC RESIN IN THE FORMING MACHINE (4). (FIGURE 1)
MYPI99002916A 1998-07-16 1999-07-10 Addition method of supercritical carbon dioxide, and production process of expanded thermoplastic resin product by making use of the addition method. MY118653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20205998 1998-07-16

Publications (1)

Publication Number Publication Date
MY118653A true MY118653A (en) 2004-12-31

Family

ID=16451269

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI99002916A MY118653A (en) 1998-07-16 1999-07-10 Addition method of supercritical carbon dioxide, and production process of expanded thermoplastic resin product by making use of the addition method.

Country Status (7)

Country Link
US (1) US6328916B1 (en)
EP (1) EP0972626B1 (en)
KR (1) KR100339311B1 (en)
CN (1) CN1102490C (en)
DE (1) DE69904887T2 (en)
MY (1) MY118653A (en)
TW (1) TWI227188B (en)

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Also Published As

Publication number Publication date
CN1247125A (en) 2000-03-15
CN1102490C (en) 2003-03-05
DE69904887D1 (en) 2003-02-20
TWI227188B (en) 2005-02-01
EP0972626A3 (en) 2000-05-24
KR100339311B1 (en) 2002-06-03
US6328916B1 (en) 2001-12-11
DE69904887T2 (en) 2003-08-28
KR20000011801A (en) 2000-02-25
EP0972626B1 (en) 2003-01-15
EP0972626A2 (en) 2000-01-19

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